Oil burner



April 21, 1925.

N. F. PRATT 1535078 OIL BURNER Filed March 28, 1924 6 WW]: 14 R a $3 WK? 4 16' 3mm JVorman z 'mzt Patented Apr. 21, 1925.

UhllTED STATES PATENT @FFEQE.

NORMAN FRANCIS PRATT, OF JACKSONVILLE, FLORIDA, ASSIGNOR TO GROVER CLEVE- LAND STEMBRIDGE, OF JACKSONVILLE, FLQBIDA.

OIL BURNER.

Application filed March 28, 1924:. Serial No. 702,664.

To (IZZ whom it may concern:

Be it known that T, NORMAN F. PRATT, citizen of the United States, residing at Jacksonville, in the county of Duval and State oi Florida, have invented certain new and useful Improvements in ()il Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved construction of generator for oil-gas producer, and more particularly to a U-tube construction of generator which admits the fuel at the end of one or" the arms of the U-tube, and which has the generator nozzle or outlet disposed between the arms of the U-tube in such a manner that the oil gases find egress from the generator through a final passage not in line with the projection of either arm.

An object or the invention is to provide a U-tube generator for oil-gas producers which will have a head in which is positioned a Z-passage, said passage being so constructed that it will be a simple operation to thoroughly clean the generator nozzle and the several passages of the generator.

Another object of the invention is to provide Utube generator with a coiled wire wick within said tube in place of asbestos wicks formerly used.

The preferred form of generator is shown in the single figure constituting the drawing, parts being shown in section.

My generator is formed with a head 1 which is of metal and which is provided with three parallel passages therethrough. The inlet opening into one arm of the U- tube is screw threaded as at 2 and is adapted to receive a threaded plug 3, to which the intake or feed pipe 4% and couplings 5 are attached. The plug 3 is provided with a central passage 6 so that the fuel entering through the said pipe will have a ready access through the same.

A U-shaped generator tube 7 is welded on to the head 1 and has an opening of corresponding diameter as the two outer passages through the said head.

The threaded blank plug 8 is removably secured in the opposite side of the head 1 to seal the opening 9 through the said head.

The inner peripheries of both of the plugs 3 and 8 are shown as beveled and adapted to seat on the correspondingly beveled seats in the passages at the opposite sides of the head. However, other means for making a tight joint may be employed.

A central opening 10 is formed through the head 1 and is threaded at its inner end to receive the removable countersunk nozzle or orifice plug 11. Said passage 10 increases in size at its outer end and is interio'rly screw threaded to receive the threaded valve casing or plug 12. A valve stem 13 is adapted to extend through the plug 12 and is threaded therethro ugh at 14. The inner end of the valve stem is of larger diameter than the outer end thereof and is adapted to have a sufficient amount of adjustment, but will be non-removable from said plug when said plug is in its place in the generator. A music wire metal valve 15 is detachably secured at the inner end oi the valve stem 13 and is adapted to extend through the nozzle or orifice plug to partially close the opening therein and to clean the opening when circumstances require. The outer end of the valve plug 12 is screw threaded and is provided with a countersunk outer end, and is adapted to threadedly receive the packing nut 16 which firmly and securely holds the packing 17 in place. The packing 17 may be of any desired material and can be readily renewed.

An operating lever 18 is secured at the outer end of the valve stem 13 for operating the same.

A clea-nout passage 19 is formed diagonally between the passage 9 in the head 1 and the central valve passage 10, thereby forming with the said passages 9 and 10, a Z-passage. The passage 19 may extend through the wall of the passage 9 as at 20 to permit a. cleaning instrumentto be inserted in said passage without bending. However, the opening 20 may not be provided when the threaded extension of the passage 9 is made shorter, as will be readily understood. when the opening 20 is provided the blank plug will close the same as shown in the drawings.

I have provided coil wire wicks 21, which are adapted to be inserted in the opposite arms of the U-tubc 7, and serve to conduct by capillary attraction the fuel as it enters the intake, and to more quickly vaporize the same before it reaches the generator nozzle.

The diameter of the plug 3 will preferably be different from the diameter of the plug 8 so that the correct plugs will have to lit into the correct openings, thereby maliing this part of the fitting fool-proof.-

The music Wire 15 does not form a gas tight fit in the nozzle plug 11, but does so obstruct the passage through the nozzle'that all the regulating of the flow oi the generated gases can be done by manipulating the valve stem 13 and so the valve controlling the flow of the fuel through the, passage i is used only to either allow free passage ot fuel or to shut it oil entirely.

When it is necessary to clean the lamp black or other obstruction from the generator, the plugs 3, 8 and 12 are removed and the cleaning is" then readily accomplished.

It will be'understood that I donot intend to limit niiyselt' to the specific construction of the U-tube generator described in my specification, as many minor changes in detail of construction may be resorted to Without departure from the spirit of the invention.

I claim:

1. Ina liquidfuel burner, the combination of a U-shaped preheating tube adapted for connection: at'one of its ends to a source of fuel supply, a head having a passage extendingtherethrough, the other'end of the tube being connected to one end of said passage, through the head at one side of the aforea fuel control passage extending said passage and parallel therewith, a valve stem controlling the fuel passage, a third passage in said head extending obliqueh fr-onra point adjacent thedischargeend of said t'uelpassage to the outer end of the first named passage, and a plug closing the outer end of said first named passage but not closing the said third passage, whereby when said plug is removed a cleaning instrument may be inserted into either of the said passages.

Ina liquid fuel burner, the combina' tion of a U'-shaped preheating tube, a head towhich the ends of the tube are attached, the head having passages t-herethrough in alinement with the arms ot'the said tube, means adapted to connect one oat said passages with a source of fuel supply, a removable plug closing the outer end of the other said passage, a third passage through said head between the aforesaid passages and parallel therewith, a valve stem disposed in said third passage adapted to' control the discharge end thereof, and a fourth passage in said head extending obliquely from a point adjacent the dischargeend of the said third passage to the outer end of that passage which is closed by a plug, said plug when removed permitting aeleaning instrument to be inserted directly into the obliquely extending passage.

In testimony whereof I afiix my signature.

- NORMAN FRANCIS 'PRATT: 

